分享thinkphp withCredentials跨域问题解决思路

跨域是什么这里就不细讲, 这里主要是thinkphp5.1, 说一下大概的解决思路

首先,因为前端是自己写的, 在axios配置中, 我设置了如下

withCredentials: true // 跨域请求时发送cookie

// 创建一个axiosconst service = axios.create({baseURL: URL , withCredentials: true, // 跨域请求时发送cookietimeout: 5000 // request timeout})
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在后端的配置中,配置的是

header("Access-Control-Allow-Origin: *");
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故而抛出了这样一个错误

Access to XMLHttpRequest at 'http://store.ink/admin/me?sid=lbn3mpacfb3k1mbehnk9qh8kf3' from origin 'http://vue-admin-web.ink' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.
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意思大概为设置 withCredentials 为 true 时, origin 是不允许为 *的, origin必须设置为来源的地址

也就是 http://a.com 请求 http://b.com 的时候, http://a.com 必须设置origin 为 http://b.com 才能通过

最后参阅配置如下

 $origin = $_SERVER['HTTP_ORIGIN'] ?? '*';header("Access-Control-Allow-Origin: $origin");header('Access-Control-Allow-Credentials: true');header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');header('Access-Control-Max-Age: 1728000');
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当然, 为 * 的时候也可以这样

header("Access-Control-Allow-Origin: *");header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');header('Access-Control-Max-Age: 1728000');
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首先定义个中间件 php think make:middleware CrossDomain

<?phpnamespace app\http\middleware;use think\Response;class CrossDomain{public function handle($request, \Closure $next){$origin = $_SERVER['HTTP_ORIGIN'] ?? '*';header("Access-Control-Allow-Origin: $origin");header('Access-Control-Allow-Credentials: true');header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');header('Access-Control-Max-Age: 1728000');return $next($request);}}
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在router.php中

Route::group('', function (){....这里写路由....})->middleware(['CrossDomain']);
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然后又有一个新问题

因为如上是走的路由文件,当请求的url匹配路由的时候, 会走跨域中间件, 当大家都知道的是, delete 和 put 等方法是会提前发起一个options请求的, 也就是无法匹配路由文件,无法走跨域中间件

故而:

定义一个错误异常接管 https://www.kancloud.cn/manual/thinkphp5_1/354092#_42

....public function render(Exception $e){# 这里来处理跨域问题 $origin = $_SERVER['HTTP_ORIGIN'] ?? '*';header("Access-Control-Allow-Origin: $origin");header('Access-Control-Allow-Credentials: true');header('Access-Control-Allow-Headers: Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, X-Requested-With');header('Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE');header('Access-Control-Max-Age: 1728000');$type = request()->isAjax() ? 'json' : "html";$response = \think\response\Json::create([], $type, 200, []);return $response; # response// 在异常处理接管中,必须返回的是一个人response响应, 而不是 `throw new `抛出一个响应}...
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完成。

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